This document discusses communicating with users and provides code examples for making phone calls and opening Facebook from an Android application. It notes that over 7 billion people use their phones to communicate and provides snippets of code for connecting a phone call, displaying an alert when calling, and checking if the Facebook app is installed before opening the Facebook app or website on a device. The document encourages evaluating if the effort to integrate communication features is worthwhile.

2. WE’RE

3. COMMUNICATING

4. WRONG!

5. Stop pushing users away!
<Say>Hello #DroidconZG!</Say>
@marcos_placona
marcos@twilio.com
Developer Evangelist @ Twilio

6. >7.2bn
A few numbers
@marcos_placona

7. @marcos_placona

8. @marcos_placona

9. @marcos_placona

10. @marcos_placona

11. @marcos_placona

12. @marcos_placona

13. @marcos_placona

14. @marcos_placona

15. @marcos_placona

16. Contacting experience
@marcos_placona

17. Contacting experience
@marcos_placona

18. @marcos_placona

19. @marcos_placona

20. @marcos_placona

21. Contacting experience
@marcos_placona

22. intent = new Intent(Intent.ACTION_CALL, Uri.parse("tel:" + "1234567890"));
if (ActivityCompat.checkSelfPermission(getApplicationContext(), Manifest.permission.CALL_PHONE) !=
PackageManager.PERMISSION_GRANTED) {
startActivity(intent);
}
<uses-permission android:name="android.permission.CALL_PHONE" />
@marcos_placona

23. @marcos_placona

24. AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);
builder.setMessage("Calling...")
.setCancelable(false)
.setPositiveButton("Hang-up", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
phone.disconnect();
}
});
AlertDialog alert = builder.create();
alert.show();
phone.connect("+1234567890");
@marcos_placona

25. AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);
builder.setMessage("Calling...")
.setCancelable(false)
.setPositiveButton("Hang-up", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
phone.disconnect();
}
});
AlertDialog alert = builder.create();
alert.show();
phone.connect("+1234567890");
@marcos_placona

26. Demo Time
@marcos_placona

27. @marcos_placona

28. @marcos_placona

29. @marcos_placona

30. @marcos_placona

31. try {
getApplicationContext().getPackageManager().getPackageInfo("com.facebook.katana", 0);
startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse("fb://page/<id_here>")));
} catch (PackageManager.NameNotFoundException e) {
e.printStackTrace();
}
@marcos_placona

32. try {
getApplicationContext().getPackageManager().getPackageInfo("com.facebook.katana", 0);
startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse("fb://page/<id_here>")));
} catch (PackageManager.NameNotFoundException e) {
startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse("https://www.facebook.com/<user_name_here>")));
}
@marcos_placona

33. @marcos_placona

34. Demo Time
@marcos_placona

35. @marcos_placona

36. @marcos_placona

37. @marcos_placona

38. @marcos_placona

39. Demo Time
@marcos_placona

40. @marcos_placona

41. ~100 Lines
~350 Lines
~750 Lines
@marcos_placona

42. @marcos_placona

43. Who thinks it’s worth it?
@marcos_placona

44. github.com/mplacona
marcos@twilio.com
Developer Evangelist @ Twilio